How do I add environment variables in Unix

Question: How to print the environment values?

printenv

OR

env

Question: How to SET the environment values For Korn shell (KSH)?

var=value
export varname

Question: How to SET the environment values For Bourne shell (sh and bash)?

export var=value

Question: How to SET the environment values For C shell (csh or tcsh)?

setenv var value

Question: What is .bashrc?
.bashrc is a shell script that Bash runs whenever it is started interactively.


Question: Can we set the environment value in .bashrc?
Yes, you can set the value in this also. like below

export PATH="$PATH:/some/addition"